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- W201039813 abstract "The acid-base properties of coumarin luminophores are widely used for widening the optical spectrum generated by lasers. The aim of this work was a quantitative study of the proton-acceptor capacity of a series of substituted coumarins at the H-complex formation stage and during protonation, and also to evaluate the basicity of these compounds in the first excited singlet state. The compounds chosen were the 4- and 7-substituted coumarins, most widely used in laser technology. In the ground state the sensitivity of the carbonyl group to the effect of a substituent was twice as great in position 4 as in position 7; for the excited state the effect was reversed." @default.
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- W201039813 date "1985-07-01" @default.
- W201039813 modified "2023-09-25" @default.
- W201039813 title "Basicity of coumarin derivatives in the ground and excited states" @default.
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